package com.sky.service.impl;

import com.github.pagehelper.Page;
import com.github.pagehelper.PageHelper;
import com.sky.constant.MessageConstant;
import com.sky.constant.StatusConstant;
import com.sky.context.BaseContext;
import com.sky.dto.EmployeeDTO;
import com.sky.dto.EmployeeLoginDTO;
import com.sky.dto.EmployeePageQueryDTO;
import com.sky.entity.Employee;
import com.sky.exception.AccountLockedException;
import com.sky.exception.AccountNotFoundException;
import com.sky.exception.PasswordErrorException;
import com.sky.mapper.EmployeeMapper;
import com.sky.result.PageResult;
import com.sky.result.Result;
import com.sky.service.EmployeeService;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.util.DigestUtils;

import java.time.LocalDateTime;

@Service
public class EmployeeServiceImpl implements EmployeeService {

    @Autowired
    private EmployeeMapper employeeMapper;

    /**
     * 员工登录
     *
     * @param employeeLoginDTO
     * @return
     */
    public Employee login(EmployeeLoginDTO employeeLoginDTO) {
        String username = employeeLoginDTO.getUsername();
        String password = employeeLoginDTO.getPassword();

        //1、根据用户名查询数据库中的数据
        Employee employee = employeeMapper.getByUsername(username);

        //2、处理各种异常情况（用户名不存在、密码不对、账号被锁定）
        if (employee == null) {
            //账号不存在
            throw new AccountNotFoundException(MessageConstant.ACCOUNT_NOT_FOUND);
        }

        //密码比对
        String passWordEncode = DigestUtils.md5DigestAsHex(password.getBytes());
        if (!passWordEncode.equals(employee.getPassword())) {
            //密码错误
            throw new PasswordErrorException(MessageConstant.PASSWORD_ERROR);
        }

        if (employee.getStatus() == StatusConstant.DISABLE) {
            //账号被锁定
            throw new AccountLockedException(MessageConstant.ACCOUNT_LOCKED);
        }

        //3、返回实体对象
        return employee;
    }

    public static void main(String[] args) {
        System.out.println(DigestUtils.md5DigestAsHex("123456".getBytes()));
    }

    /**
     * 员工创建
     *
     * @param employee
     * @return Result
     */
    @Override
    public Result<String> employeeAdd(Employee employee) {
        employeeMapper.insert(employee);
        return Result.success();
    }

    /**
     * 分页查询员工
     *
     * @param pageQueryDTO
     * @return PageResult
     */
    @Override
    public PageResult employeePageQuery(EmployeePageQueryDTO pageQueryDTO) {
        // 分页查询
        PageHelper.startPage(pageQueryDTO.getPage(), pageQueryDTO.getPageSize());
        Page<Employee> page = employeeMapper.pageQuery(pageQueryDTO);
        return new PageResult(page.getTotal(), page.getResult());
    }

    /**
     * 修改员工状态
     *
     * @param id
     * @param status
     */
    @Override
    public void employeeStatusUpdate(Long id, Integer status) {
        Employee employee = Employee.builder()
                .id(id)
                .status(status)
                .build();
        employeeMapper.employeeUpdate(employee);
    }

    /**
     * 根据id查询员工
     *
     * @param id
     * @return
     */
    @Override
    public Employee getById(Long id) {
        Employee employee = employeeMapper.getById(id);
        employee.setPassword("******");
        return employee;
    }

    /**
     * 编辑员工
     *
     * @param dto
     */
    @Override
    public void employeeEdit(EmployeeDTO dto) {
        Employee employee = new Employee();
        BeanUtils.copyProperties(dto, employee);
        employeeMapper.employeeUpdate(employee);
    }

}
